<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        *{
            margin: 0;
            padding: 0;
        }
        .pic_bgc{
            width: 200px;
            height: 300px;
            margin: auto;
            overflow: hidden;
        }
        .pic_bgc .pic_info{
            position: absolute;
            top: 300px;
            left: 668px;
            width: 180px;
            height: 100px;
            padding: 10px;
            background-color: rgba(0, 0, 0, .1);
            color: #ffffff;
            transition: top ease 2s;
        }
        .pic_bgc:hover .pic_info{
            top: 180px;
            display: block;
        }
    </style>
</head>
<body>
    <div class="pic_bgc">
        <img src="./image/banner01.jpg" alt="图片">
        <div class="pic_info">
            <h3>图片标题</h3>
            <p>图片文字说明图片文字说明图片文字说明</p>
        </div>
    </div>
</body>
</html>